Technology advances can go two ways, one way is to have advances
in medical technology to give people some life extension.
In another direction, technology is advancing in a way which is
causing severe harm to human lifespan.
Examples:
Weapons of mass-destruction, chemical/biological weapons, guns
and explosives...
What we put in our mouth... cigarettes, alcohol, the artificial
favouring added to the food we eat and drink.
Worsening environment... air pollution, water pollution, land
polution e.t.c.
Bad media... what we see/hear/read from the Internet can have a
negative influence in our mind, especially for kids.
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If you have the time and don't mind reading short stories. You
should read from from paragraph 2 to 22 in this article ->
http://www.basicbuddhism.org/index.cfm?GPID=29